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Dosage ordered 40 mg of secobarbitol (elixir) The stock bottle contains 22 mg of secobarbitol in 5 ml solution. How many mL should patient received?

User Lassie
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1 Answer

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If the dose requires that a total of 40 mg be given, then you take the ratio of the stock bottle (mg/mL) and solve for the total amount of mL that are needed by multiplying the amount of mL required (x):


(22)/(5) *x=40

Multiply by 5 on both sides to give:


22x=200

Then solve for x:


(200)/(22)=9.091mL

Another, possibly quicker, way to solve would be to set up a proportion - one side the stock bottle ratio, and the other side the dosage requirements:


(22)/(5) = (40)/(x)

Cross multiply and you get:


22x=200

And you would solve this the same way as above.

So the patient should receive 9.091 mL of secobarbitol.
User Maxim Gueivandov
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